scribble23

Apologies in advance as I'm not very techy so not sure what info I need to give here!

Had my G4 since March last year with no issues at all. Android version is 7.0. Yesterday I installed the December 1st 2017 security patch and immediately I couldn't connect to any WiFi network (home, work, on the bus, my sister's house). All other devices work fine on my home WiFi. Everything else working as normal on the phone.

I've tried resetting all the network settings and adding them back again - no joy. Has anyone else experienced this issue at all or does anyone have any idea how I can fix it? It's driving me nuts as I use WiFi for about 95% of what I do with my phone!